Audio based system and method for in-vehicle context classification
AssigneeQualcomm Technologies International, Ltd.
InventorsRamji Srinivasan, Derrick Rea, David Trainor
Life of this patent
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Abstract
A method of determining contexts for a vehicle, each context corresponding to one or more events associated with the vehicle, for example that the radio is on and a window is open. The method comprises detecting sound activities in an audio signal captured in the vehicle, and assigning context to the vehicle based on the detected sound activities. Non-audio data such as the operational status of a vehicle system or device is used to help assign contexts.
Claims35
A method of determining contexts and associated sound activities for a vehicle, the method including:
- associating a plurality of vehicle contexts with a respective one or more of a plurality of sound activities;
- detecting an audio signal in the vehicle;
- detecting, based on said detected audio signal, at least one of said sound activities in said audio signal;
- subsequent to detecting at least one of said sound activities, identifying a vehicle context associated with said detected at least one of said sound activities;
- providing a respective n-gram model for each of said vehicle contexts;
- and
- assigning to said vehicle said at least one identified vehicle context and said detected at least one of said sound activities with which said identified vehicle context is associated, wherein said assigning involves using a history of at least one previously assigned vehicle context together with said n-gram models in identifying said at least one of said vehicle contexts.
A system for determining contexts and associated sound activities for a vehicle, the system including:
- at least one microphone for detecting an audio signal in the vehicle;
- and
- a context classification system configured to:
- associate a plurality of vehicle contexts with a respective one or more of a plurality of sound activities,
- detect, based on said detected audio signal, at least one of said sound activities in said audio signal,
- subsequent to detecting at least one of said sound activities, identify a vehicle context associated with said detected at least one of said sound activities,
- provide a respective n-gram model for each of said vehicle contexts;
- and
- assign to said vehicle said at least one identified vehicle context and said detected at least one of said sound activities with which said identified vehicle context is associated, wherein said assigning involves using a history of at least one previously assigned vehicle context together with said n-gram models in identifying said at least one of said vehicle contexts.
A vehicle audio system comprising a system for determining contexts and associated sound activities for a vehicle, the context determining system including:
- at least one microphone for detecting an audio signal in the vehicle;
- and
- a context classification system configured to
- associate a plurality of vehicle contexts with a respective one or more of a plurality of sound activities,
- detect, based on said detected audio signal, at least one of said sound activities in said audio signal,
- subsequent to detecting at least one of said sound activities, identify a vehicle context associated with said detected at least one of said sound activities,
- provide a respective n-gram model for each of said vehicle contexts;
- and
- assign to said vehicle said at least one identified vehicle context and said detected at least one of said sound activities with which said identified vehicle context is associated, wherein said assigning involves using a history of at least one previously assigned vehicle context together with said n-gram models in identifying said at least one of said vehicle contexts.
Dependencies are inferred from the claim text.